@misc{indiciaea363f157108b,
  title = {An elementary student as a behavioral engineer.},
  author = {P R Surratt and R E Ulrich and R P Hawkins},
  year = {1969},
  doi = {10.1901/jaba.1969.2-85},
  url = {https://pubmed.ncbi.nlm.nih.gov/16795213/},
  note = {Source identifier: 16795213}
}